Question

What is the sum of 3.6 x 10^3 and 6.1 x 10^3?

Answer 1

9.7 x 10^3

It is the same as 3600 + 6100 = 9700 => 9.7 X 10^3

Answer 2

3.6 + 6.1 = 9.7

Lets go through your choices to see which one is correct

10^3 = 1000

10^6 = 1,000,000 (So, B & D aren't your answers that you're looking for

Now we have to choose from A & C.

C. isnt your answer because it equals 97,000

Option A. 9.7✖10^3 would most likely be your answer!